This is the 5339th most frequent Russian word.
ответом
"Ответом" means "answer" or "response" (instrumental case).
Here, 'ответом' means 'answer' and is used as an instrumental case, showing the tool or means I answered with.
Мой ответом на вопрос был честным.
My answer to the question was honest.
In this sentence, 'ответом' also means 'answer' and is instrumental, indicating the means through which she helped.
Она помогла мне своим ответом.
She helped me with her answer.
Again, 'ответом' is used in the instrumental case to describe the means or manner of answering.